baber/WOPTO huggingface dataset:
Patent GB-549278-A (GB)
Title: Improvements in or relating to cathode-ray tubes of the wall coated type
IPC: H01J29/88
Filed: 1941-11-19
Abstract: 549,278. Cathode-ray tubes. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 19, 1941, No. 14892. [Class 39 (i)] Post-deflection acceleration is obtained by two wall coatings 3, 4 at 1000 and 4000 volts respectively and in order to reduce wall discharges, one or more narrow insulated strip coatings 9, 10, 11 are placed between them near and parallel to the edge of one coating, preferably the low potential one 3. The spaces 12, 13, 14 between the strips and the nearby coating may be coated with a slightly conductive material such as phosphoric acid. All the coatings are of the same material, such as graphite, silver or platinum. The high potential electrode 4 has a separate contact pin 8. The subject-matter is identical with that of Specification 33019/45, as open to inspection under Sect. 91.
Patent GB-898657-A (GB)
Title: Improvements in or relating to harvesting machines
Inventor: EVERETT CHARLES VERNE
IPC: A01D34/535
Filed: 1960-04-28
Abstract: 898,657. Forage harvesters. INTERNATIONAL HARVESTER CO. April 28, 1960, No. 14909/60. Class 6(3). In a harvester of the type comprising flails mounted on a driven, rotary shaft 19, the shaft is formed on opposed sides with registering pairs of slots 24, 24<SP>1</SP> and 25, 251 for receiving spring steel cutter-mounting straps 30, 31. The straps are held in the slots, partly by lugs on the shaft engaging apertures in the straps, and partly by bolts 51 which urge each pair of straps against the intermediate'portion of the shaft 19. Each bolt 51 also serves to locate a sleeve 49 passing through apertures in the end of a cutter blade 42. The shaft 19 may be of any cross-section, and may be either hollow or solid.
Patent GB-940613-A (GB)
Title: Improvements in or relating to tape feeding apparatus
IPC: B21C47/00
Filed: 1962-04-17
Abstract: 940,613. Feeding magnetic tapes. AMPEX CORPORATION. April 17, 1962 [May 11, 1961], No.14943/62. Heading G5R. [Also in Division F2] Constant tension is maintained in a magnetic tape 16 as the remaining diameter of tape on the feedspool decreases by applying a brake band 82 of substantially zero rigidity to the feed-spool driving means 56, the tape tension being sensed by a roller 37 connected through link-work to one end 85 of the band 82 to incrementally reduce its effect as feeding proceeds. In the rest state the band 82 is non-operative, but during recording or playback (Fig. 2) a solenoid 117, acting through a spring 114, engages the band while conventional stopping brake bands 58, 59 are released by a solenoid 74. The band 82 comprises a number of strands of pure copper wire 83 (Fig. 6) encased in a flexible plastic sheath 84 anchored to bifurcate end-pieces 85, the brake-drum groove being semi-circular in form. Damaging tension on the band 82 due to tape breaking or the end of the tape passing the roller 37 is prevented by a micro-switch 141 which operates to release the solenoid 117. Further solenoids 219, 231 are energized with 117 to engage head-contact rollers 213 and a pinch-roller 45; this imposes a starting tension in the tape and wraps the tape drivingly around a roller 41 carrying a drive-steadying flywheel 42. The roller 37 is latched clear of a threading channel (Fig. 1 not shown) and tripped by the solenoid 74 to simultaneously trip it and place an obstruction in the threading channel which must be cleared manually before further threading can take place.
Patent GB-219453-A (GB)
Title: Improvements in or relating to automatic telephone systems
IPC: H04M19/02
Filed: 1923-06-09
Abstract: 219,453. Coventry Automatic Telephones, Ltd., and Collyer, J. E. June 9, 1923. Automatic exchange systems; selectors. - Hunting of selectors is controlled by self-interrupting springs arranged on the first movement of the stepping magnet to complete a local circuit for the magnet, which releases itself at the end of the stroke. The invention is shown applied to a two-co-ordinate switch which hunts vertically. The vertical magnet 8 controls springs 18 - - 20 so that at the beginning of the stroke and before the lifting pawl engages its ratchet, springs 18, 19, come together, and at the end of the stroke springs 19, 20 separate. Operation. When the selector is seized, relays 14, 16, 17 energize, the latter completing a circuit for the rotary magnet 7 which is then controlled by numerical impulses. Owing to the changeover of off-normal springs 36 - - 38, relay 17 relapses at the end of the digit and energizes the vertical magnet 8 which moves the wipers one step and then releases itself. The change-over of vertical off-normal springs 41 - - 43 now connects magnet 8 to the test wiper 3 and switching relay 15, and if the wiper 3 is on a busy trunk magnet 8 re-energizes. Springs 18, 19 complete a local circuit for magnet 8, and at the end of the stroke springs 19, 20 separate and release it. When an idle line is found, switching relay 15 operates. being no longer short-circuited. At the end of the call, relay 15 relapses and energizes release magnet 9, which interrupts the circuit of magnet 8 and locks itself over springs 38, 37 so that release is not interfered with if the selector is seized again while it is off-normal.
Patent GB-1188263-A (GB)
Title: Preparation of Rubber Modified Plastics
IPC: C08F255/02
Filed: 1968-03-29
Abstract: 1,188,263. Graft polymerization process. COPOLYMER RUBBER & CHEMICAL CORP. 29 March, 1968 [10 April, 1967], No. 15158/68. Heading C3G. A rubber-modified plastic is prepared by a process comprising dissolving a rubbery interpolymer of ethylene, at least one alpha monoolefin containing 3-16 carbon atoms and at least one polyene in an alkenyl aromatic monomer, mixing the solution with a dispersing agent selected from (a) a homopolymer of the said monomer, (b) a graft interpolymer of the said rubbery interpolymer and the said aromatic monomer, (c) interpolymers of the said aromatic monomer and an acrylic monomer, (d) graft interpolymers of the said rubbery interpolymer, the said aromatic monomer and an acrylic monomer and (e) mixtures thereof and interpolymerizing the resulting mixture in the presence of a free radical initiator until 90 to 100% by weight of the alkenyl aromatic monomer has reacted. An acrylic monomer may also be incorporated in the interpolymer aromatic monomer solution along with the dispersing agent. The graft interpolymer dispersing agents may be prepared by polymerizing the interpolymer rubber and graft monomer or monomers to form a prepolymer cement, which is used per se as the dispersing agent or completely polymerized in bulk or aqueous suspension to form the agent. The rubbermodified plastic is prepared by e.g. batch-wise or continuous polymerization of the reaction mixture. In the examples, ethylene/propylene/ 5-ethylidene-2-norbornene interpolymer rubbers are grafted with styrene or styrene and acrylonitrile by processes carried out entirely in bulk or partly in bulk with completion of polymerization in aqueous suspension.
Patent GB-593338-A (GB)
Title: Improvements in or relating to internal combustion engines operating on the four-stroke cycle
IPC: F04D29/28
Filed: 1945-06-15
Abstract: 593,338. Superchargers; helicocentrifugal pumps. MEISSER, C. June 15, 1945, No. 15257. Convention date, July 15, 1944. Drawings to Specification. [Class 110 (i)] [Also in Group XXVII] A four-stroke cycle internal-combustion engine is supercharged by a helico-centrifugal pump, the blades of which are generated by radial lines and are curved backwards so that the outlet makes, with the tangent at the periphery and in the plane of rotation, an angle whose cosine is greater than the relative velocity at outlet divided by twice the peripheral velocity. The supercharger may be driven by an exhaust gas turbine with or without mechanical connection with the internalcombustion engine.
Patent GB-291034-A (GB)
IPC: F16J15/44
Filed: 1928-05-24
Abstract: 291,034. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). May 24, 1927, [Convention date]. Stuffing - boxes, substitutes for. - Packing for a turbine &c. shaft c comprises a sleeve e loose on the shaft and having a flange h engaging the shaft and a flange g engaging the end of the packing-box d. The interior of the sleeve is formed with packing teeth i and the face of the flange g is formed with concentric packing teeth k. Clearance is provided between the sleeve and the interior of the box d. A space e is connected to a point of lower pressure.
Patent GB-818183-A (GB)
Title: Improvements in or relating to electrical oscillation generators employing transistors
IPC: H03B5/12
Filed: 1956-05-17
Abstract: 818,183. Converting. GENERAL MOTORS CORPORATION. May 17, 1956 [May 31, 1955], No. 15393/56. Class 38 (2). [Also in Group XL (c)] In an inverter circuit, a transistor 1 is arranged as an oscillator with the emitter-collector path in series with a supply 12 and the primary 13 of a transformer, a winding 26 in series with a bias source 21 being coupled to the primary to provide feedback in the base-emitter circuit, and a centre-tapped secondary 27 feeding rectifiers 34, 36 to supply D.C. to a load 38. Upon closing switch 8 the collector current builds up at a rate primarily determined by the inductance of winding 13, a voltage proportional to the rate of change of collector current being fed to the base to maintain a flow of base current, Fig. 2 (not shown). The collector current continues to increase until limited by the transistor characteristics, whereupon feedback ceases and the base and collector currents fall to zero. The fall in collector potential produces an inverse pulse across winding 13 and a corresponding pulse across winding 26. The inverse voltages under no-load condition determine the maximum supply potential 12 which may be utilized, but this may be increased by employing an energy-absorbing device 31, 32 which limits the amplitude of these voltages, Fig. 2 (not shown).
Patent GB-1196432-A (GB)
Title: Improvements in Road Carpeting Machines
Inventor: POTTS THOMAS CECIL
IPC: E01C19/48
Filed: 1967-04-05
Abstract: 1,196,432. Road making machines. HUDSWELL CLARKE & CO. Ltd. 21 March, 1968 [5 April, 1967], No.15608/67. Heading E1G. In a road-paving machine material (asphalt, concrete, &c) from a front hopper 4 on a wheeled chassis 31 is fed rearwardly by two parallel scraper conveyers 17, 18 and deposited on the ground in front of a trailing screed and spreader plate assembly 7 carried by a sulb-chassis 6 extending rearwardly from a horizontal pivot 5. The two conveyers are independently driven through infinitely variable speed drives controlled from an operators station 32. The assembly 7 rests on the deposited material and is suspended by adjustable hangers 46 and rods 47 from the subchassis 6. When not in use, the sub-chassis 6 may be raised by a ram and lost motion link (not shown). The machine also includes independent variable-speed hydraulic drives for two reversible distributing augers 35, 36 and for a tamper plate 52. The screed plate 51 and spreader plate 51 a form part of a centrally-split box 45 provided with chain-coupled adjusting screws 67 whereby the plate 51 may be shaped to form a central crown. Lateral extension boxes 60 may be swung into line with the box 45, and extension augers may be coupled to the hollow shafts of augers 35, 36-Fig. 6 (not shown). In the inoperative position shown the boxes 60 may be held raised by cam tracks 62 or by jack bolts. The screed heater 59 may be provided. The front wheels 2 are steerable. The wheels 3 are chain driven from half shafts connected through a lockable differential gear and hydrostatic transmission 10 to an engine 8. Each conveyer, Fig. 4 (not shown), comprises a fixed horizontal plate (19) over which material is swept by transverse slats (26) carried by underlying endless chains (21). Rollers 85 adjacent the front hopper 4 can bear against the wheels of a loading truck to allow loading during advance. In a modified machine, for confined conditions, the hopper 4 is replaced by a long narrow hopper which can be swung about a vertical axis for side loading.
Patent GB-1279234-A (GB)
Title: Improvements in heat exchangers
Inventor: JEPHSON JOHN EDWARD
IPC: F28F1/42
Filed: 1968-04-01
Abstract: 1279234 Tubular heat exchangers L JONES 1 July 1969 [1 April 1968] 15609/68 Heading F4S In a heat exchanger particularly for use as an air-cooled oil cooler, an insert member 6 located within and attached to one end of an externally finned tubular body 1 is constructed to define a tortuous passage for the oil to be cooled. The insert member comprises an elongated core 7 formed with a plurality of integral spaced-apart annular fins 8. The core 7 includes a boss 9 and a flange 9a which bolts on to the end flange 5 of the body 1. Openings 8a, 8b located in adjacent fins 8, respectively above and below a longitudinally extending rib 14, ensure a tortuous passage for the oil through the body 1 between inlet and outlet ports 12 and 4. Heat from the oil is dissipated into the surrounding air via the external fins 2 formed integrally on the tubular body 1. In an alternative embodiment the inlet and outlet ports are positioned at the same end of the body, the core 7 in this case being hollow to provide a return passage for the oil. The annular fins 8 may be replaced by a single helical fin, or several intertwined fins, so that the oil follows one or several parallel helical paths.
Patent GB-561246-A (GB)
Title: Lubrication system for a sleeve rotating on a stationary shaft
IPC: F16N9/02
Filed: 1942-11-05
Abstract: 561,246. Lubricating systems. ARMSTRONG SIDDELEY MOTORS, Ltd., and HEPPNER, F. A. M. Nov. 5, 1942, 'No. 15666. [Class 12 (iii)] A sleeve 14 rotating on ball or roller bearings on a stationary shaft 12 has a peripheral channel 20 to collect oil which is returned to the interior 22 of the shaft by a scoop 19 fixed to the shaft, the scoop being effective beyond the outer races of the bearings. The oil is fed from a surface groove 11 to the bearings 29 by radial slots 17 adjacent the race rings 13. The scoop 19 may be between or outside the bearings with a slot 17 on the far side of each bearing, or as shown the scoop 19 and slots 17 are between the bearings and the race walls of the outer races 27 together with the return passages 25 slope outwardly from the shaft.
Patent GB-1133901-A (GB)
Title: Improvements in mixer-grinders, particularly for foundry sands
Inventor: EVANS OWEN
IPC: B02C15/14
Filed: 1967-04-05
Abstract: 1,133,901. Edge-runner mills. SOC. ANON. DES ETABS. PH. BONVILLAIN & E. RONGERAT. 5 April, 1967, No. 15689/67. Heading B2A. [Also in Division G3] A mixer-grinder for foundry sand comprises inside a tank 1 an arm 12 driven by a motor 10 and on which symmetricallycranked levers 31, 32 are articulated, each carrying a muller 11 at one of its ends. A fluid-actuated jack 33 controls the movements of the mullers. The pressure of fluid fed into the jack cylinder is varied, to control movement of the mutters as a function of the power developed by the motor. In operation, compressed air for the jack is controlled by an electro-valve 40, and supplied to the jack cylinder via a duct 41, an electro-valve 42, and ducts 43, 44 constituting a direct feed circuit for rapid application of maximum pressure. When full motor power is developed an ammeter relay 47 operates the valve 42 via a lead 49, cuts the direct feed circuit and the jack is fed via a shunt circuit comprising restrictor 50, an electro-valve 51 and the duct 44. When the rated motor power is reached an ammeter relay 52 is excited, and actuates the valve 51 to cut air flow to the jack, from which air is discharged by a calibrated orifice. When the motor power returns to normal the relay 52 is deenergised, and the valve 51 slowly reestablishes jack pressure. At the end of a cycle a timer actuates the valve 40 to lift the mullers, lower scrapers, and discharge the sand via gates opened under control of a valve 54.
Patent GB-641638-A (GB)
Title: Improvements in or relating to terminating devices for armoured electric cables
IPC: H01R13/621
Filed: 1948-06-11
Abstract: 641,638. Two-part couplings. GENERAL ELECTRIC CO., Ltd., and PITMAN, E..J. June 11, 1948, No. 15824. [Class 38 (i)] A terminating device used on, e.g. a flameproof coupling, for an armoured cable 2 comprises a sleeve 35 and a clamp 27 surrounding it, having a complementary annular channel and projection between which the armouring is anchored when the clamp is secured on the sleeve. In one embodiment the channel is formed between upturned rims 36 on the sleeve which is threaded on the cable and the clamp comprises collars 31, 32 which are grooved axially at 44 and are held together by screws and nuts 33, 34. Two packing rings 28, 29 sandwich the clamp between them in order to position it in the coupling, to the body of which they are secured by screws 37.
Patent GB-292346-A (GB)
Title: Improvements in or relating to cycle or like brakes
IPC: B62L3/02
Filed: 1927-06-14
Abstract: 292,346. Pugh, J. V., Griffiths, J. W., and Rudge-Whitworth, Ltd. June 14, 1927. Brake mechanism.- In cycle &c. brakes of similar type to those described in Specification 278,077, a brake control bar or lever follows the general outline of the handle-bar from the end of the hand grip to the central stem, and swings as a whole to or from the handle-bar about its pivoted or movablysupported ends to apply one or more brakes, the pressure of the hand being applied at any point between the pivoted ends. As shown, the inner ends of two levers e, e<1>, Figs. 1 and 3, pass through the sides of the box-like end c of a lever c, c<1>, and are provided with arms e<2>, which engage the interior of the box lever so as to rock it about its pivot b<1> carried by a clip b on the handle-bar stem, the front and rear brakes being thus applied by means of rods d, d<1>. The outer ends of the levers e, e<1> may be pivoted at f<3> to depending lugs f<1> on the ends of the handle-bar, or may be formed with return bends which enter the ends of the handle-bar grips and are there provided with pivotal or rocking supports, springs associated with such pivotal &c. supports effecting the return movement of the levers.
Patent GB-121760-A (GB)
Title: Improvements in and relating to Pad or Pot Sleepers for Railway Tracks.
Inventor: WALKER JOAH HAIGH
IPC: E01B3/36
Filed: 1917-10-30
Abstract: 121,760. Walker, J. H. Oct. 30, 1917. Pot sleepers; tic-bars; sleepers and parts, arrangement of.--Pot or pad sleepers are formed of blocks a narrower than their length and being inclined on their under face towards the centre of the track on both sides of the rail support. The pots or pads may abut centrally or have a spacing block c. Dovetail locking-pieces d also may be employed to secure the pads or the pad and the strut together.
Patent GB-639005-A (GB)
Title: Improvements in or relating to roll-holders
IPC: A47K10/38
Filed: 1947-06-16
Abstract: 639,005. Roll holders. SALTHOUSE, E. June 16, 1947, No. 15866. [Class 18] A roll holder with means for locking the roll in position comprises two brackets 1, 2 connected to a strip 3 by screws 6. The bracket is attached to the wall by screws 5 so as to be incapable of direct access when the roll is in position. The bracket 1 is formed with a bearing comprising a closedended recess while the bracket 2 has a further bearing comprising a hole through which an axle 9 slides passing through a sleeve 8 on which a roll 7 is mounted. Each bracket is formed with a boss 10 concentric with the hole and recess. The axle 9 which is open at the end adjacent the recess is provided with a spring detent comprising plungers 11, 12 which project through holes in the axle and openings 14 in the sleeve. When the roll has been unwound the spring plungers are depressed and the axle may be removed thus releasing the sleeve. A wire may be provided to pass through a hole drilled in the closed ended bearing to effect the initial movement of the axle.
Patent GB-1010574-A (GB)
Title: Production of hydrogen-containing gases
IPC: C01B3/40
Filed: 1963-04-23
Abstract: Free hydrogen containing gases are prepared by passing MeOH and water at 150-350 DEG  C. over a supported Ni catalyst.  This decomposes at least a part of the impurities in the MeOH and causes partial decomposition of the MeOH.  The mixture is then passed over a Zno/CuO (optionally containing Cr2O3) catalyst to decompose the remainder of the MeOH. The MeOH may be washed with alkali before the process.  The Ni and CuO/ZnO catalysts may be contained in separate reactors, the temperature of the first being in the range 150-350 DEG  C. and the second 150-400 DEG  C. The space velocity of the gases may be 0.5 to 1.0 vol./vol./hr.  The H2O:MeOH ratio may be from 1:1 to 4:1. The ratio of ZnO to CuO in the catalyst may be from 100:1 to 2:1 and the ZnO:Cl2O3 ratio from 4:1 to 1:1.  The catalyst system may be regenerated by passing a free oxygen containing gas (e.g. air) at 150 DEG  to 450 DEG  C. through the reactors; the Ni catalyst may be further regenerated by passing a free hydrogen containing gas before restoring the flow of feedstock.ALSO:In a process for the preparation of free hydrogen containing gases from methanol a supported nickel catalyst is used prior to a ZnO/CuO catalyst (optionally containing Cr2O3).  The Ni catalyst may be prepared by impregnating the base (e.g. sepiolite) with an aqueous solution of nickel nitrate.  After drying it may be stored for long periods before use.  The catalyst is formed by heating at 500-550  DEG C. to decompose the salt to nickel oxide, followed by reduction in a hydrogen stream at 150-600  DEG C. and at a pressure of 0-200 lbs./sq.inch gauge to obtain metallic nickel.  Alternatively the base material may be milled with dry nickel formate and pelleted.  It may then be directly reduced to nickel by heating in a hydrogen stream.  A water soluble ammonia/nickel formate complex may also be used for impregnating the base followed by drying and heating in a hydrogen stream.
Patent GB-731273-A (GB)
Title: Improvements relating to power-operated presses
Inventor: CHALLEN WALTER BERNARD
IPC: F16D13/70
Filed: 1952-06-25
Abstract: 731,273. Friction clutches. TAYLOR & CHALLEN, Ltd. June 24, 1953 [June 25, 1952], No. 15944/52. Class 80 (2). A plate clutch for a power press is operated by a slidable control collar 22 through a link 23 connected to one arm of a bell-crank lever 24 the other arm of which is connected through a toggle link 25 to the presser plate (not shown), the fulcrum 26 of the lever 24 being on a sleeve 27 which is splined on the driving member 17 and the position of which is automatically adjusted by a ring 28 which is caused to screw along the member 17 as the clutch plates wear. A bevel-ended spring-loaded radial plunger 29 in the collar 22 co-operates with the toe 38 of a lever 33 which is mounted on the sleeve 27 and which has a lost-motion connection 39, 40 with a second lever 34 connected by a link 42 to plates 44 carrying a pawl 47 co-operating with a ratchet wheel 50 carried by the member 27 and rigid with a worm 51 engaging wormteeth 52 on ring 28. The levers 33, 34 are spring-urged clockwise against stops. When the clutch is correctly adjusted and the collar 22 is in its leftward clutch-engaged position, plunger 29 is pressed in by lever 33 but remains beneath the toe 38, as shown in Fig. 5. As the clutch plates wear, however, collar 22 has to move further to the left for clutch engagement until plunger 29 passes beyond toe 38 and springs outwards, as shown in Fig. 2, so that on the subsequent rightward disengaging movement of collar 22 the lever 33 is turned anticlockwise'until its toe 38 can ride over the plunger. The lever 34 is thus also turned anticlockwise, after the lost-motion 39, 40 has been taken up, and causes the ratchet wheel 50 to turn so as to cause ring 28 to screw along member 17 and move sleeve 27 slightly to the left. This adjustment is repeated on successive operations of the clutch until the relationship of Fig. 5 is restored.